NXW - Air Conditioning Aermec - Free user manual and instructions

USER MANUAL NXW Aermec

Setpoint Setpoint riscald.1:

Setpoint riscald.2: --- C

Setpoint Setpoint raffredd.1:

• Aperto = pompe in OFF;

• Aperto =valvola in OFF;

• Aperto =valvola in OFF;

Electronic adjustment for water-cooled heat

C1: C2: the machine at a distance. After a pow- er cut, the unit can re-start automatically keeping the original settings. The unit control panel allows quick set- ting of the machine functioning param- eters and their display. The display is made up from a graphical matrix with 132 x 64 pixel in order to signal the type of functioning, displaying set pa- rameters and any alarms that have in- tervened. All default settings and any modifi cations are memorised in the board. With installation of the PGD1 remote panel, it is possible to replicate all functions and settings available from Function Key ALARMS key

• One press displays the list of active alarms;

• One prolonged press (at least 5 seconds) resets the active alarm; Prg MENU ACTIVATION key

• Pressing this key activates navigation among the menus; Esc MENU EXIT key

• Pressing this key goes back to the display of the previous menu; NAVIGATION key (+)

• Pressing this key while navigating among the menus, allows to enter the menu selected;

• Pressing this key during navigation among parameters, allows to select the parameter displayed and enter the modi- fication mode;

• Pressing this key during modification of a parameter, confirms the modifications to the value of the parameter selected; NAVIGATION key (-)

• Pressing this key while navigating among the menus/ parameters, allows to pass to the previous menu/param- eter;

• Pressing this key during modification of a parameter, decreases the value of the parameter selected; Icon Meaning Cooling mode activated Heating mode activated Simultaneous defrosting mode activated Separate defrosting mode activated. This mode is only avail- able for twin-circuit models, in which it is possible to proceed with defrosting engaging just one circuit; Icon Meaning

• FIXED icon = Compressor OFF;

• FLASHING icon = Compressor in switch-on phase, in stand- by due to safety times;

• FIXED icon = Compressor ON;

• FLASHING icon = Compressor in switch-off phase, in stand- by due to safety times; Compressor forded off; Limited compressor; Compressor in alarm conditions; Access to the “quick menu” by pressing the key The user interface is represented by a graphical display with six keys for navi- gation. The displays are organised via a hierarchy of menus, which can be acti- vated by pressing the navigation keys. The display default of these menus is represented by the main menu. Navi- gation among the various parameters takes place using the arrow keys po- sitioned on the right side of the panel. These keys are also used to modify the selected parameters.

• INTERFACE COMMAND KEYS: • MAIN MENU ICONS:4 Menu structure and navigation Navigation in the various menus for the management of the NXW units is represented by the layout shown at the side. In this layout fi nd the repre- sentation of the various menus, via which the unit functions are man- aged, ordered by sequence and highlighting which function keys must be pressed to navigate among the various menus. Prg Esc Esc Esc Prg Esc Esc Esc Esc Esc Esc Esc Esc

Main menu Quick menuON - OFFMenu SET-POINT Menu SEASONMenu TIME PERIODS Menu INPUTS/OUTPUTSMenu HISTORICAL ALARMSAFTER-SALES ASSISTANCE menu These menus are protected by a password and can only be used by authorised install- ers.

The fundamental information regarding use of the unit is avail-able in the main menu;The quick menu contains some information regarding the cooling circuit and the unit compressors; This menu contains the commands for switching the unit on and off; This menu contains the parameters for setting the work set points for the various functioning modes of the unit; This menu contains the parameters for selecting the various functioning modes of the unit; This menu contains the parameters for setting the timer periods; This menu contains the parameters linked to the manage-ment of the inputs and the outputs piloted by the unit boards; This menu contains the list of the alarms occurring on the unit, ordered by date;

For further details regarding the parameters contained in every menu, please refer to the relative chapters at every menu. MANUFACTURER'S menu5 Use operational procedures

To manage or modify the operational parameters of the NXW units, the control panel interface on the machine must be used. The fundamental operations that the user must be able to perform for correct use of the unit are the following: (1) Pass from one menu to another; (2) Select and modify a parameter;

Pass from one menu to another (a) In order to scroll the various menus (the order with which the menus are displayed is represented in the previ- ous page) it is first necessary to enter the menu selection mode by pressing the ( Prg ) key; (b) Once the menu selection mode has been entered, scroll these using the arrow keys: the ( ) key to pass to the pre- vious menu and the ( ) key to pass to the next menu; next menu next menu (c) When the desired menu is displayed, press the ( ) key to enter the menu. To exit the menu and go back to the menu selection mode, press the ( Esc ) key; Exit menu Enter a menu

Selecting and modifying a parameter (a) Once the selected menu has been entered (following the procedure

) it is possible to scroll the windows that make it up using the arrow keys, using the ( ) key to pass to the previous parameter and the ( ) key to pass to the next parameter; parameter menu parameter menu (c) When the desired parameter is displayed, press the ( ) key to enter the parameter. To exit the parameter and go back to the parameter selection mode, press the ( Esc ) key; ATTENTION: Once a parameter has been selected, by pressing the ( ) key, automatically enter the modification mode of that parameter. From this mode it is possible to set the desired values for the parameters, following the procedure below: (1) pressing the ( ) key, a flashing cursor will appear near to the first field of the parameter that can be modified (if fields that can be modified are not displayed, no cursor will appear); (2) pressing the ( ) key or the ( ) key, the value of the field will increase or decrease; (3) by pressing the ( ) key, the modifications to the field value will be confirmed, saving it in the memory; On the basis of the type of parameter selected, the number of fields that can be modified may vary; Exit from a parameter Enter a parameter6 MAIN menu Visualisation on unit display Index Display/Parameter A Date and time: this data is only displayed in this window (default window on unit switch-on or during normal functioning). B Evaporator inlet temperature: displays the temperature of the return water to the system; C Evaporator outlet temperature: displays the temperature of the water produced by the machine; D QUICK MENU key: icon that represents access to the quick menu (to access this menu, press the key); E Mode: displays the unit functioning mode:

F/G Compressor circuit 1/2 state: the state of the compressors of circuit 1/2 is represented (if the unit envisions two cooling circuits) with an icon (if circuit 1 or 2 is composed of several compressors, an icon is used for every compressor); the icons that can be used are:

• FIXED icon = Compressor OFF;• FLASHING icon = Compressor in switch-on phase, in stand-by due to safety times;• FIXED icon = Compressor ON;• FLASHING icon = Compressor in switch-off phase, in stand-by due to safety times;Compressor forded off;Limited compressor;Compressor in alarm conditions; MAIN menu

MAIN MENU - QUICK MENU - Cooling circuit information Visualisation on unit display Index Display/Parameter A Circuit number: Indicates to which cooling circuit the data displayed refers to. B High pressure: Indicates the high pressure value measured on the cooling circuit; this data is expressed in (bar) but the corresponding temperature data is also displayed. C Low pressure: Indicates the low pressure value measured on the cooling circuit; this data is expressed in (bar) but the cor- responding temperature data is also displayed. D/E Compressor 1/2 state: Indicates the state of the compres- sor 1 (of the circuit to which it refers), this state can be one of the following: ON = compressor ON; OFF = compressor OFF; OFF alarm = compressor off due to alarm; OFF stand-by 180s = compressor request but cannot switch- on due to safety times; OFF stand-by 180s = compressor request but cannot switch- on due to safety times; QUICK-MENU parameters MAIN MENU - QUICK MENU - General regulation settings Visualisation on unit display Index Display/Parameter A Unit: Indicates the general parameters with which the unit is set. B Current set point: Indicates the value currently set as work set point. C Regulation temperature: Indicates the temperature detected by the probe used (this probe can vary on the basis of the type of functioning). D Partialisation steps requested: Indicates haw many compres- sors are on instant by instant.

Unit Current set: 12.0 C

Step required: 01/028 ON/OFF menu - Unit switch-on or switch-off from PGD1 panel Visualisation on unit display Index Display/Parameter A Unit On/Off: Indicates the ON/OFF state of the unit. B Board address: logical address of the board. C State: Indicates the current state of the unit.

Change into: indicates the status in which the unit will be put after the parameter value has been confirmed. Normally the value of this field is in line with that of field (C). To switch-on (if the unit is off) or switch-off (if the unit is on), this field must be modified and the modification confirmed (via the “selection and modification of a parameter” procedure explained in the “Use operational procedure” chapter. ON/OFF MENU parameters Parameters that can be modified by the user

On/Off Unit Unit address: 1 Actual state:

Change to: Unit On SWITCH ON9 SET POINT menu - Setting the work set points for HEATING mode Visualisation on unit display Index Display/Parameter A Set point: Indicates the work temperature.

Heating set point 1: indicates the temperature set with which to make the unit work when hot. C Heating set 2: NOT USED. Parameters that can be modified by the user SET POINT menu- Displays the set point currently in use Visualisation on unit display Index Display/Parameter A Set point: Indicates the work temperature. B Current set point: indicates the work set point currently in use on the basis of the envisioned functioning mode. SET POINT MENU parameters SET POINT menu - Setting the work set points for COOLING mode Visualisation on unit display Index Display/Parameter A Set point: Indicates the work temperature.

Cooling set point 1: indicates the temperature set with which to make the unit work when cold. C Cooling set 2: NOT USED. Parameters that can be modified by the user

Setpoint Heating setpoint 1:

Heating setpoint 2: --- C

Setpoint Courrent setpoint:

Setpoint Cooling setpoint 1:

Cooling/Heating Unit mode: COOLING A11 CLOCK/PERIOD menu - Setting the daily time periods Visualisation on unit display Index Display/Parameter A Clock: Indicates the date and time of the system

Day: indicates the day of the week to which the time periods refer, set in the same page.

Copy to: Indicates the possibility of copying the time period set- tings of the day selected in the field (B), also for the other days (thus preventing having to repeat the same insertion). This option can be used to copy the settings in a single day (select- ing the desired day) or for every day of the week.

Start time period: indicates the start time of the various time periods (maximum 4 periods daily). It is only specified at the start of the time period as it is considered that the end of a time period coincides with the start of the successive one. E / F Cooling/Heating: indicates the setting used during the spe- cific time period in the cooling or heating mode. Remember that the time periods specified in this menu are used during the winter season (heating mode) and for the summer (cooling mode), therefore on the basis of the mode active on the unit, appropriate settings will be performed. The possible settings both for cooling and heating are:

• SET1 = unit on and functioning with set point 1 (the coher- ent set point will be selected on the basis of the season acti- vated);

• OFF = the unit is switched off; CLOCK/PERIOD menu - Setting the system date and time Visualisation on unit display Index Display/Parameter A Clock: Indicates the date and time of the system B Day: indicates the day of the week (on the basis of system set- tings).

Date: Indicates today's date.

Time: indicates the current time. CLOCK/PERIOD MENU parameters Parameters that can be modified by the user Parameters that can be modified by the user

Copy to:MONDAY NO Cool Heat

E F12 CLOCK/PERIOD menu - Setting SPECIAL DAYS Visualisation on unit display Index Display/Parameter A Clock: Indicates the date and time of the system B Special days: indicates a series of days when particular behav- iour can be programmed.

WARNING: the settings introduced as special days have

priority with respect to normal time periods and special periods.

Start: Indicates the special day selected (remember that the special day can only be specified within the year in progress, for this reason the date is expressed as a day and month). D/E Cooling/Heating: indicates the setting used during the spe- cific time period in the cooling or heating mode. Remember that the time periods specified in this menu are used during the winter season (heating mode) and for the summer (cooling mode), therefore on the basis of the mode active on the unit, appropriate settings will be performed. The possible settings both for cooling and heating are:

• SET1 = unit on and functioning with set point 1 (the coher- ent set point will be selected on the basis of the season acti- vated);

• OFF = the unit is switched off; CLOCK/PERIOD menu - Setting SPECIAL PERIODS Visualisation on unit display Index Display/Parameter A Clock: Indicates the date and time of the system B Special periods: indicates a maximum series of three periods (periods mean at least two days) in which a particular behav- iour can be programmed.

WARNING: the settings introduced as special periods have

priority with respect to normal time periods.

Start: Indicates the date of the start of the special period selected (remember that the special period can only be speci- fied within the year in progress, for this reason the date is expressed as a day and month).

End: indicates the date of the end of the special period select- ed (remember that the special period can only be speci- fied within the year in progress, for this reason the date is expressed as a day and month). E / F Cooling/Heating: indicates the setting used during the spe- cific time period in the cooling or heating mode. Remember that the time periods specified in this menu are used during the winter season (heating mode) and for the summer (cooling mode), therefore on the basis of the mode active on the unit, appropriate settings will be performed. The possible settings both for cooling and heating are:

• SET1 = unit on and functioning with set point 1 (the coher- ent set point will be selected on the basis of the season acti- vated);

• OFF = the unit is switched off; Parameters that can be modified by the user Parameters that can be modified by the user

• Digital outputs; C B5: indicates the temperature value of the water in output from the condenser. INPUTS/OUTPUTS menu - Evaporator IN/OUT temperature analogue inputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C B3: indicates the temperature value of the water in output from the evaporator. D B2: indicates the temperature value of the water in input to the evaporator. INPUTS/OUTPUTS menu - HIGH/LOW pressure transducers analogue inputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C B1: indicates the value read on the high pressure side of the cooling circuit indicated. This reading is expressed as a pres- sure value and a temperature value. D B2: indicates the value read on the low pressure side of the cooling circuit indicated. This reading is expressed as a pres- sure value and a temperature value. INPUTS/OUTPUTS MENU parameters

B1= High press.circ.1: 13.6barg

B2= Low press.circ.1: 11.8barg

• Digital outputs; C 01: indicates the status of the high pressure switch, mounted on the cooling circuit indicated. The status of this component can be one of the following:

• Closed = normal working state;

• Open = maximum pressure threshold exceeded (HIGH PRESSURE alarm); D 02: indicates the status of the low pressure switch, mounted on the cooling circuit indicated. The status of this component can be one of the following:

• Closed = normal working state;

• Digital outputs; C B10: indicates the temperature value of the water in input to the condenser. INPUTS/OUTPUTS menu - Remote commands digital inputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C 03: indicates the status of the digital input with remote ON-OFF function. The status of this input can be one of the fol- lowing:

• Closed = unit ON from remote;

• Open= unit OFF from remote;

• --- = input not used; D 04: indicates the status of the digital input with remote ON-OFF function. The status of this input can be one of the fol- lowing:

• Closed = COOLING mode set from remote;

• Open = HEATING mode set from remote;

• --- = input not used;

04= Cooling/Heating:

• Digital outputs; C 05: indicates the status of the flow switch positioned on the evaporator, the status of this input can be one of the following:

• Closed = normal functioning;

• Open = minimum water flow rate threshold exceeded at the evaporator (Flow switch alarm);

06: indicates the status of the compressor magnet circuit breaker indicated, the status of this input can be one of the following:

• Closed = normal functioning;

• Open = the compressor load has exceeded the maximum threshold (Compressor magnet circuit breaker alarm); INPUTS/OUTPUTS menu - Compressor 2 magnet circuit breaker digital inputs and compressor phases Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

07: indicates the status of the compressor magnet circuit breaker indicated, the status of this input can be one of the following:

• Closed = normal functioning;

• Open = the compressor load has exceeded the maximum threshold (Compressor magnet circuit breaker alarm); D 08: indicates the status of the phase control on the compres- sors, the status of this input can be one of the following:

• Closed = normal functioning;

• Digital outputs; C/D 13-14: indicates the status of the evaporator pump magnet circuit breaker indicated. The status of this input can be one of the following:

• Closed = normal functioning;

• Open = the pump load has exceeded the maximum thresh- old (Pump magnet circuit breaker alarm);

13= Ovrl.evap.pump 1: Close 14= Ovrl.evap.pump 2:

• Digital outputs; C 17: indicates the status of the flow switch positioned on the condenser, the status of this input can be one of the following:

• Closed = normal functioning;

• Open = minimum water flow rate threshold exceeded at the condenser (Flow switch alarm); INPUTS/OUTPUTS menu - Compressors digital outputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C/D 01-02: indicates the status of the compressors indicated, the status of these outputs can be one of the following:

• Closed = compressor ON;

• Digital outputs; C/D 05-06: indicates the status of the pumps indicated, the status of these outputs can be one of the following:

• --- = pump not present;

• Digital outputs; C/D 10-11: indicates the status of the solenoid valves indicated, the status of this output can be one of the following:

• --- = valve not present; INPUTS/OUTPUTS menu - Evaporator pump digital outputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/ exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C 09: indicates the status of the pump indicated, the status of this output can be one of the following:

• Open = pump OFF; INPUTS/OUTPUTS menu - Anti-freeze resistance and compressor phases alarm digital outputs Visualisation on unit display Index Display/Parameter A Inputs/Outputs: Indicates the state of the different entries/exits. B Master: indicates the type of data displayed; the displays can be:

• Digital outputs; C 07: indicates the status of the digital output linked to the anti- freeze resistance. The status of this output can be one of the following:

• Closed = normal functioning

• Open = Anti-freeze alarm active; D 08: indicates the status of the digital output linked to the com- pressor phases alarm. The status of this output can be one of the following:

• Closed = compressor phases alarm in progress;

• Open = no alarm in progress;

• Digital outputs; C/D 12-13: indicates the status of the 4-way valves indicated, the status of this output can be one of the following:

• --- = valve not present;

D19 HISTORICAL ALARMS menu - Example of historical alarms Visualisation on unit display Index DisplayA Historical alarms: Indicates the alarms recorded in the mem- ory. B Date: indicates the time and date when the alarm was trig-gered. C Index: indicates the index with which the alarm is saved in the memory. The lower the index the older the alarm.D Code: indicates the identification code of the alarm (see alarms table)E Description: brief description of the alarm. F/G Input-Output: indicates the evaporator water input and output temperature value at the time the alarm in question was trig-gered. Historical ALARMS The alarms historical menu does not contain user parameters like the menus previously explained, but it is possible to scroll the last 50 alarms that have occurred, ordered by data with some information recorded regarding the status of the machine at the time the alarm was triggered.Navigate this menu by pressing the ( ) key, as the fi rst display represents the last alarm triggered, while the alarm with index 001 represents the oldest alarm memorised.

ALC30 Ovrl. comp.2 circ.1 Inlet.evap: Outlet evap: 26/03/10

D20 AFTER-SALES ASSISTANCE menu - INFORMATION sub-menu - Display of system information Visualisation on unit display Index DisplayA Information: Indicates information regarding the system.B This window indicates some information linked to the control system hardware. AFTER-SALES ASSISTANCE menu - LANGUAGE CHANGE sub-menu - Enabling of language selection on start-up Visualisation on unit display Index DisplayA Language: Indicates the system language. Control: indicates the possibility to enable or disable the sys-tem language selection at every unit start-up. Display time: indicates the time within which it will be possible to select the system language during the start window. If the language selection window option is disabled on start-up, this parameter will not be visible. AFTER-SALES ASSISTANCE menu - LANGUAGE CHANGE sub-menu - Language selection Visualisation on unit display Index DisplayA Language: Indicates the system language.B Language: indicates which language is set for the display. Control: indicates the control for modifying the system lan-guage. AFTER-SALES ASSISTANCE menu The after-sales assistance menu contains some sub-menus that are protected by a password. These sub-menus are not available to the user and their management is only allowed by staff authorised for after-sales assistance of the unit. Parameters that can be modified by the userParameters that can be modified by the user Language Language:

ENTER to change ENGLISH

code:Aerchiller Ver.:1.0 19/03/10 Bios:4.35 10/09/09 Boot:4.01 13/04/0621 AFTER-SALES ASSISTANCE menu - BOARD CHANGE sub-menu - Display of board address Visualisation on unit display Index Display A Board change: Indicates the address of the board. B This window indicates the address of the control board. AFTER-SALES ASSISTANCE menu - HORS WORKED sub-menu - Display of evaporator pump functioning hours Visualisation on unit display Index Display A Hour counter: Indicates the number of hours of work of the components: B Evaporator pump 1: indicates how many functioning hours of the pump on the evaporator 1 (if present). C Evaporator pump 2: indicates how many functioning hours of the pump on the evaporator 2 (if present). AFTER-SALES ASSISTANCE menu - HORS WORKED sub-menu - Display of compressors functioning hours Visualisation on unit display Index Display A Hour counter: Indicates the number of hours of work of the components: B Circuit 1: Indicates the number of the circuit to which the compressors refer. C/D/E Compressor: indicates how many functioning hours of the compressors present on the unit. AFTER-SALES ASSISTANCE menu - HORS WORKED sub-menu - Display of condenser pump functioning hours Visualisation on unit display Index Display A Hour counter: Indicates the number of hours of work of the components: B Condenser 1 pump: indicates how many functioning hours of the pump on the condenser 1 (if present). C Condenser 2 pump: indicates how many functioning hours of the pump on the condenser 2 (if present). Board switch Unit address:1

Work.hours Evaporator pump 1:

Work.hours Condenser pump 1:

SETPOINT RAFFREDD.2: --- C

Setpoint Setpoint calefac.1:

Setpoint calefac.2: --- C